public void RunEnumerations()
{
//Affichage du label de l'énum
Console.WriteLine($"JoursSemaine.Lundi = {JourSemaine.Lundi}");
//Affichage de l'entier de l'énum
Console.WriteLine($"JoursSemaine.Lundi = {(int)JourSemaine.Lundi}");
//int >vers valeur d'enum
int day4 = 4;
JourSemaine whoIsDay4 = (JourSemaine)day4;
Console.WriteLine($"day4 = {whoIsDay4}");
//String > valeur d'enum
string mardi = "Mardi";
// .Net / C# <= 4
JourSemaine parsed = (JourSemaine)Enum.Parse(typeof(JourSemaine), mardi);
Console.WriteLine($"parsed = {parsed}");
// .Net Coez / .Net > 4
JourSemaine parsed2;
//out permet de passer par "adresse" et non pas valeur
bool didItWork = Enum.TryParse("Mercredi", out parsed2);
Console.WriteLine($"parsed2 = {parsed2} / worked ? {didItWork}");
//GetNames renvoie un tableau de String
var enumNames = Enum.GetNames(typeof(JourSemaine));
foreach (var enumName in enumNames)
{
Console.WriteLine(enumName);
}
//GetValues renvoie un tableau d'objet (ici des JourSemaine) que l'on cast en entier)
var enumValues = Enum.GetValues(typeof(JourSemaine));
foreach (JourSemaine enumValue in enumValues)
{
Console.WriteLine((int)enumValue);
}
var jour = (JourSemaine)(new Random().Next(0, 7));
DayOfWeek foundDayOfWeek;
switch (jour)
{
case JourSemaine.Lundi:
foundDayOfWeek = DayOfWeek.Monday;
break;
case JourSemaine.Mardi:
foundDayOfWeek = DayOfWeek.Tuesday;
break;
case JourSemaine.Mercredi:
foundDayOfWeek = DayOfWeek.Wednesday;
break;
case JourSemaine.Jeudi:
foundDayOfWeek = DayOfWeek.Thursday;
break;
case JourSemaine.Vendredi:
foundDayOfWeek = DayOfWeek.Friday;
break;
case JourSemaine.Samedi:
foundDayOfWeek = DayOfWeek.Saturday;
break;
case JourSemaine.Dimanche:
foundDayOfWeek = DayOfWeek.Sunday;
break;
default:
foundDayOfWeek = DayOfWeek.Sunday;
break;
}
//C#7 : nameof() => nom de la variable, en string
Console.WriteLine($"{nameof(foundDayOfWeek)} = {foundDayOfWeek}");
Console.WriteLine($"Random day was {foundDayOfWeek}");
}
static void Main(string[] args)
{
#region Ex: Parse
//Console.Write("Entrez le premier chiffre : ");
//String nb = Console.ReadLine();
//Console.Write("Entrez le premier chiffre : ");
//String nb1 = Console.ReadLine();
//int result = int.Parse(nb) + int.Parse(nb1);
//Console.WriteLine(result);
//Console.Read();
#endregion
#region tryparse
//Console.Write("Entrez le premier chiffre : ");
//String nb = Console.ReadLine();
//Console.Write("Entrez le premier chiffre : ");
//String nb1 = Console.ReadLine();
//int nbConvert;
//int nb1Convert;
//bool ok = int.TryParse(nb, out nbConvert);
//bool ok1 = int.TryParse(nb1, out nb1Convert);
//if(ok && ok1)
//{
// int result = nbConvert + nb1Convert;
// Console.WriteLine(result);
//}
//Console.Read();
#endregion
#region Ex_methodes
//Console.WriteLine(StringLenghtAdd("Hello", "World"));
//SayHello("Shéra");
//double number = 2.5;
//Console.WriteLine("Before : {0}", number);
//ExampleMethodRef(ref number);
//Console.WriteLine("After : {0}", number);
//string s1 = ExMethodeOut(out int nb);
//Console.WriteLine(s1 + " " + nb);
//Console.ReadLine();
//Equation test;
//test.A = 2;
//test.B = 9;
//test.C = -5;
//double? X1;
//double? X2;
//Console.WriteLine(test.Resoudre(out X1, out X2));
//Console.WriteLine("{0} {1}", X1, X2);
//Console.ReadLine();
#endregion
#region Enum
JourSemaine weekend = JourSemaine.Dimanche;
Console.WriteLine(weekend);
string j = weekend.ToString();
j = "Mard";
Console.WriteLine((int)weekend);
foreach (string s in Enum.GetNames(typeof(JourSemaine)))
{
Console.WriteLine(s);
}
//JourSemaine day = (JourSemaine)Enum.Parse(typeof(JourSemaine), j);
JourSemaine day;
if (Enum.TryParse <JourSemaine>(j, out day))
{
Console.WriteLine("{0} est le {1} jour de la semaine.", day.ToString(), (int)day);
}
else
{
Console.WriteLine("Error");
}
Console.ReadLine();
#endregion
#region ex02
//Console.WriteLine("Veuillez entrer un chiffre : ");
//string str = Console.ReadLine();
//bool ok = int.TryParse(str, out int nb);
//if (ok)
//{
// int result = (nb / 2) + (nb / 2);
// if (result == nb)
// {
// Console.Write("Le nombre est pair !");
// }
// else
// {
// Console.Write("Le nombre est impair !");
// }
//}
//Console.ReadLine();
#endregion
}
public void RunEnumerations()
{
//Affichage du label
Console.WriteLine($"JourSemaine.Lundi = {JourSemaine.Lundi}");
//Afficher l'entier sous-jetant
Console.WriteLine($"JourSemaine.Lundi = {(int)JourSemaine.Lundi}");
//int > vers valeur d'enum
int day4 = 4;
JourSemaine whoIsday4 = (JourSemaine)day4;
Console.WriteLine($"day4 = {whoIsday4}");
string mardi = "Mardi";
JourSemaine parsed = (JourSemaine)Enum.Parse(typeof(JourSemaine), mardi);
Console.WriteLine($"parsed = {parsed}");
JourSemaine parsed2;
//out a la meme fonction que le & en C (pointeur)
bool ditItWork = Enum.TryParse("Mercredi", out parsed2);
Console.WriteLine($"parsed2 = {parsed2} / worked ? {ditItWork}");
//Enumérer les labels
var enumNames = Enum.GetNames(typeof(JourSemaine));
foreach (var enumName in enumNames)
{
Console.WriteLine(enumName);
}
var day = (JourSemaine) new Random().Next(1, 7);
DayOfWeek dayOfWeek;
switch (day)
{
case JourSemaine.Lundi:
dayOfWeek = DayOfWeek.Monday;
break;
case JourSemaine.Mardi:
dayOfWeek = DayOfWeek.Tuesday;
break;
case JourSemaine.Mercredi:
dayOfWeek = DayOfWeek.Wednesday;
break;
case JourSemaine.Jeudi:
dayOfWeek = DayOfWeek.Thursday;
break;
case JourSemaine.Vendredi:
dayOfWeek = DayOfWeek.Friday;
break;
case JourSemaine.Samedi:
dayOfWeek = DayOfWeek.Saturday;
break;
default:
dayOfWeek = DayOfWeek.Sunday;
break;
}
Console.WriteLine($" {nameof(dayOfWeek)} = {dayOfWeek}");
}
public void RunEnumerations()
{
// Affichage du label
Console.WriteLine($"JoursSemaine.Lundi = {JourSemaine.Lundi}");
// Afficher l'entier sous-jacent
Console.WriteLine($"JoursSemaine.Lundi = {(int)JourSemaine.Lundi}");
// int > vers valeur d'enum
int day4 = 4;
JourSemaine whoIsday4 = (JourSemaine)day4;
Console.WriteLine($"day4 = {whoIsday4}");
// String > valeur d'enum
string mardi = "Mardi";
// .Net / C# <= 4
JourSemaine parsed = (JourSemaine)Enum.Parse(
typeof(JourSemaine),
mardi);
Console.WriteLine($"parsed = {parsed}");
// .Net Core / .Net > 4
//JourSemaine parsed2;
//bool didItWork = Enum.TryParse(mardi, out parsed2);
//C# 7
bool didItWork = Enum.TryParse(mardi, out JourSemaine parsed2);
Console.WriteLine($"parsed2 = {parsed2} / worked ? {didItWork}");
// Énumérer les labels
var enumNames = Enum.GetNames(typeof(JourSemaine)); // string []
var enumValues = Enum.GetValues(typeof(JourSemaine)); // JourSemaine [] sous typé
foreach (var enumName in enumNames)
{
Console.WriteLine(enumName);
}
foreach (JourSemaine enumValue in enumValues)
{
Console.WriteLine((int)enumValue);
}
var jour = (JourSemaine)(new Random().Next(0, 7));
DayOfWeek foundDayofWeek;
switch (jour)
{
case JourSemaine.Lundi:
foundDayofWeek = DayOfWeek.Monday;
break;
case JourSemaine.Mardi:
foundDayofWeek = DayOfWeek.Tuesday;
break;
case JourSemaine.Mercredi:
foundDayofWeek = DayOfWeek.Wednesday;
break;
case JourSemaine.Jeudi:
foundDayofWeek = DayOfWeek.Thursday;
break;
case JourSemaine.Vendredi:
foundDayofWeek = DayOfWeek.Friday;
break;
case JourSemaine.Samedi:
foundDayofWeek = DayOfWeek.Saturday;
break;
case JourSemaine.Dimanche:
default:
foundDayofWeek = DayOfWeek.Sunday;
break;
}
// C# 7 : nameof()
Console.WriteLine($"{nameof(foundDayofWeek)} = {foundDayofWeek}");
}
